Thought Leadership Series
NovAtel sponsors a series of articles written by GNSS experts that explore issues and topics that pertain to engineers, designers, manufacturers and policy makers of global navigation satellite systems (GNSS).
There’s precise, and then there’s really precise. When it comes to GNSS user equipment, how do more frequencies add up to more benefits?
It is easy to design a lightweight antenna with small volume for small percentage bandwidth. As the bandwidth increases, it becomes more and more difficult to make the antenna small without losing its efficiency.
Europe’s GNSS program began planning for its next generation even before the first fully operational capability (FOC) Galileo satellite was launched.
For all its remarkable qualities, GNSS has not turned out to be a one-size-fits-all panacea. A search for "just-in-case" options is under way.
More difficult operating environments, scarcity of skilled workers, and use with valuable crops drive the search for hi-tech solutions.
Improvements in technology, services, and equipment design has meant that more is less when it comes to GNSS-aided agriculture.
More GNSS providers, more satellites, more signals. That must mean more accuracy, more easily - right? Well, not necessarily.
Let's get literal for a moment. What shape is the world in? GNSS can help us answer that question.
For at least 20 years, GPS experts, geodesists, and public agencies have been working together to develop high-accuracy, large-scale continuously operating GPS reference stations that provide them the capability to monitor and model crustal deformation, tectonic plate movement, and the effects of geohazards such as earthquakes and volcanic eruptions.
Born in the depths of the Cold War, the Global Positioning System pioneered a long and winding road to its preeminent status in myriad civilian uses. But it began - and continues - as a quintessentially military utility. What's that mean in today's world?
After 46 years of familiarity with the GPS C/A code, GNSS manufacturers and civil users are being introduced to a bunch of relative strangers: nearly a dozen new signals coming on the air in the next few years.
Why bother tracking signals from more than one global navigation satellite system? Isn't GPS (or GLONASS, or BeiDou, or Galileo) enough?
Growing pressure on a limited resource is squeezing users and giving rise to proposals for "sharing" spectrum. Will GNSS be lost in the noise?
Chris Bartone talks about GNSS antennas: how multiple GNSSes and multiple signals affect their design and operations, some common errors and their mitigation and how phase centre offsets and group delay variations affect GNSS measurements.
GNSS receivers can be fooled, but haven't been much...thus far. Should GNSS stakeholders gamble on the status quo? Will widespread spoofing arrive before antispoofing solutions are in place?
In six short years, China has built a fully functional regional GNSS system, BeiDou. How is it doing so far and where is it heading?
Unmanned aerial systems have a long association with military uses. So, plans to expand their civil applications are generating a lot of heat.
Omnipresence. GNSS systems are global by nature, but they can't provide reliable positioning anytime, anywhere. Meet their new friends.
When it comes to GNSS, everybody talks about location, location, location. But shouldn't it really be time, time, time? So much critical infrastructure depends on GNSS-provided time - communications, banking and finance, emergency services, electrical power grids, to name a few.
Five to ten metres might seem like pretty good real-time accuracy. But not when you're landing an airplane or guiding a farm vehicle through a field.
Personal privacy devices. LightSquared. Solar max. It can be a hostile world out there for GNSS technology.
As the world's GNSS systems gain traction in building out constellations with new capabilities, what can be done to achieve maximum benefits?
As the world’s GNSS systems gain traction in building out constellations with new capabilities, what can be done to achieve maximum benefits?
Inertial Technology, rather than being eclipsed by GNSS, has found new life on its own and in integrated systems. But engineers from both sides of the divide have much to learn about the other.